Mechanism for forming sliders



Jan. 2, 1945. B. P. LAWSON 2,366,269

- MECHANISM FOR FORMING SLIDERS Filed Nov. 5, 1942 a Sheets-Sheet 1 INVENTOR. Bz'rdsa/Z 1? Lawson 1945. a. P. LAWSON v MECHANISM FOR FORMING SLIDERS Filed NOV. 5, 1942 8 Sheets-Sheet 2 INVENTOR. Birdsa/I R Lawson ATT RNEZY Jan. .2, 1945. B. P. LAWSON 2,366,269

MECHANISM FOR FORMING SLIDERS Filed Nov. 5, 1942 8 Sheets-Sheet 5 Fig. 3.

' INVENTOR. Bzrdsall P Ian son BY a T A ATTORNEY Jan. 2, 1945. B. P. LAWSON 2366369 MECHANISM FOR FORMING SLIDERS Filed Nov. 5, 1942 8 Sheets-Sheet 4 Fig. 4

1N VENT OR.

BY Birdsall R lam son Jan. 2, 1945. M B. P. LAWSON 2,366,259

MECHANISM FOR FORMING SLIDERS Filed Nov. 5, 1942 8 Sheets-Sheet 5 INVENTOR. Birdsall I? Lawson [S M .3 x0

K, AT TO RN EY az l B. P. LAWSON MECHANISM FOR FORMING SLIDERS 8 Sheets-Sheet 6 INVENTOR.

Filed NOV. 5, 1942 Birdsall R Lawson Fig. 12

Jan. 2, 1945. B. P. LAWSON MECHANISM FOR FORMING SLIDER-S 8 Sheets-Sheet '7 Filed NOV. 5, 1942 INVENTOR. Bz'rdsall P. Lawson v A T T 0 N EY Jan. 2, 1945. B. P. LAWSON MECHANISM FOR FORMING SLIDERS Filed Nov. 5, 1942 8 Sheets-Sheet 8 INVENTOR. Bzrdsall R lawson ATTO RNEY Patented Jan. 2, 1945 MECHANISM FOR FORMING SLIDERS Birdsall P. Lawson, Providence, R. I., assignor to Pilling Chain Company, Providence,- R. I., a

corporation of Rhode Island Application November 5, 1942, Serial No. 464,687

20 Claims.

cluding side flanges which cooperate to form the necessary channels for the engagement of the slider with the interlockin elements of the fastener..' Since the sliders are subjected to severe stresses in use, which tend to spread or separate the wings, as when afastener is closed under strain, and to compress it, as where a slider is passed through a wringer or-ironer, in the laundering of the article to which the fastener is attached, the slider must possess the requisite rigidity to resist these deforming forces if it is to remain serviceable.

Various means have been resorted to for stiffening the slider, that which has been found to be most satisfactory comprising a V-shaped reinforcementformed in the neck-defining surfaces of the slider. This not only serves to stiffen the slider against expansion and compression forces, but functions to provide surfaces which guide the movement of the interloc'kable elements of the fastener through the divergent portions of the channels formed by the opposite slider wings.

Heretofore, it has been the standard practice to form th V-shapedreinforcement in the blank of-the strip metal, preliminary to the conforma tion of the slider therefrom, in a series of successive die operations, the reinforcement being produced in a manner similar to that followed in so-called coining processes. This, of course, necessitates the use of stock of a heavier gauge ment formedin the neck' thereof-subsequently to the completion of the shaping of the slider,-

than is normally required for the slider, in order to provide for the displacement of the metal of the blank to produce the V-shaped formation and with the relatively expensive die operations involved-adds materially to the cost of. the end 'q lw The primary object of the present invention,

therefore, is -to reduce the production costs of in a simple die operation, thereby reliminating the relatively slow and costly coining processes now followed and obviating theluse ofthe higher priced, heavier gauge strip material that is essential in practicing the conventional methods More specifically, it is an important object; 01;. this invention to provide a mechanism for performing a so-called necking step in'the produc-:- tion of sliders, whereby. the slider structure, in the zone of the neck istmaterially reinforcedor stiffened to resist extension and compression forces to which the unit'may be, subjected muse, in a simple and economical operation; theslider which is otherwise'completely formed being introduced to my mechanism for the deformation of the neck-defining surfaces ;'under pressure, in a manner to produc a V or ,other appropriately shaped reinforcement, which will not only stiffen the unit but will serve;to;guide the interlockable elements of a fastener intoand out of engagement, in the movement ofthe'slider'thereover.

Another object of this invention is to providefi a mechanism, as, aforesaid,- whereby. sliders as variously formed in diversdie' orother operations to embody a web connecting the opposit'eywings thereof,- in the manneriof the1conventional'slider, may be readily provided'withuan adequateirein forcement and rendered-more durable and"effi-'"' cient in use; thus making it possible for the manufacturer to attain the. advantages that are inherent to sliders offsuch reinforced type, "without going to the expensetof converting their equip ment or re-schedulingthtair operations," with the attendant delays in production." a .2

It is also an object 'of my inventionitoprovide a method'of reinforcing or stiffening a slider to resist extending and*compressing forces, follow-T ing the-formation of the flanged wings" thereof and the disposition; of; such wingsin, oppositely spaced relation .to form channels forthe reception of theinterlockablefastener elements, in the completion of the slider; my method comprising the final step in the production of the unit.

Other objects and advantages flowing from the practicing of my invention will become-manifestv as the description proceeds. For the purposes of'this disclosure, in ,the'ac-" companying drawings, I have. shown a preferred embodiment of my mechanism 'forcarrying my invention into eifect which functions to produce a V-shaped reinforcementrin theotherwise com- 1 pleted slider Howevenit-willba understood that the mechanismmay-take other-forms to"meet 1 specific requirements of production and use, within the spirit and scope of my invention. For example, in lieu of the V-shaped reinforcement, the elements which cooperate to produce it may be so formed as to produce a reinforcement of a U or other shape appropriate to the stiffening and functioning of the slider.

In the drawings Figure 1 is an end elevation of my mechanism.

Figure 2 is a top plan view of the structure of Figure 1. v I

Figure 3 is a longitudinal section on the line 33 of Figure 2, with the reciproca'ble tablein' the punch operating position.-

Figure 4 is a view similar to Figure, 3, showing the relative positions of the parts just after the punch has operated.

Figure 5 is a view on the line 5'-5 ofFigure 4.

Figure 6 is a sectional elevation of the mechanism, with the punch raised and the work-receiving recess of the table alined with theworkdelivery chute.

Figure 7 is a sectional detail, illustrativeof the relative positions of the parts in the upward movement of the punch;

Figures 8, 9 and 1 0 are respectively sectional |8-I8 of Figure 16, showing" the cooperating male and female die-forming elements in their ultimate reinforcement-forming positions;

' Figure 19 is a-vertical secti'onal view of a modifled form of work-feeding mechanism, on the line l9-|9 of Figure 20; and

Figure 20 isa view in elevation taken. from the line 20-20 of Figure 19a Referring now to the drawings in detail, inwhich like characters of reference are employed to designate similar parts inthe. several views,

the machine or mechanism: conforms generally to the conventional power press, including a main frame supported from the standards 3b, the usual bed 32 and a head 33, with which the mechanism for concurrently reciprocating the central slide or so-called ram "34, relative to the outer guides 35, is associated. 7

Fixed to the bed 32 is a base 3B,.upon1whichis mounted slides 31a, 31b, connected for relative and conjoint movement, as hereinafter described,.

these slides: constituting a table, generally indicated at 31,, reciprocable upon said base to receive. the work from the chute 38 and transfer: it to the die position for the necking operation in a continuing movement in one direction. Following the withdrawal ofthe work from the die position, the table moves in the-opposite direction to receive another piece off-work for subsequent delivery to the die position, the reverse directionalymovements of the tabl'eand the period-of dwell of'the. table for the performance of the punching operation andeffecting the with-- drawalof the work from the dieposition, being in timed relation to the cooperating movements ofthe ram or central slide 34" which carries themale die 33',- mounted in thepunch holder 4]! 6, 8, 9 and 10.)

rigid with said ram'or slide 34, as and in the manner hereinafter described.

As herein shown, the effort for effecting the movement of the table 31 to and from the die position, in timed relation to the reciprocation of the ram or central slide 34 is derived from the drive shaft 4| journaled in the head 33 of the machine, a slotted crank head 42 excentrically mounted on said shaft, as at 42a, being; connected to the lever 43 by the rod 44, to impart motion to a second lever 45 connected to the table 31, the two levers 43 and 45 being keyed to the shaft 46 mounted in a bearing on the bracket 41 fixed to the machine frame 30. As will be noted, these levers are relatively angularly disposed for functioning in the manner of a bell-crank lever. The free end of the lever 45 is pivoted, as at 48,

to the block 49 slidable upon the rod 50 rigid with the fitting 5|, the latter being pivotally mounted in the outer end of the slide 52 mounted on the pin 53. A spring 54 interposed between the block 49 and the nuts 55 threaded on the outer end of said rod 50, normally acts to urge said block into engagement with the rod-em bracing abutment 56 on said fitting: 5|;v Astu'd 58 threaded into the adjacent end: of. the slide 3111, as-at 58a, and extending through asuita'ble:

bearing dependent-from the slide 52, is embraced;

by a spring 51 abutting upon the stops 5 1a,.this

spring functioning to maintain the: slide 31m in spaced relationship to the opposed end of: the:- slide 31b of the table, as may be predetermined. by the appropriate adjustment. of the nuts: 59 on said stud, as will become evident; An arm 60g, extending outwardly from the fitting 5|, carries. a spring 6| dependent from its: outer end, for: connectionto a bracket (not shown) bolted to'the' machine frame below the level of the bed 32-, to exert a continuous downward pull upon: said. arm 60 and control the movement of the fitting: 51 on the pin 53, to conform to the radius differ:- entials in the oscillation of the lever 45.v

The opposed ends of the table-forming slides 31a, 31b, are conformed to cooperate in the formation of a slot 62 in the table 31:,whichis'adapted to receive a slider, indicated at. s, from thework-delivery chute 38 ,v for transfer to the die" position, one of the walls of said slot being; pro-- vided with a groove 63 to accommodate the lug l' of the slider, this groove being adapted. to negister with a complemental groove 38a extending. from end to end of the chute 38:; when the slot 62 of said table 31 is alined with thechute'to -receive the lowermost slider therein. (See Figst It will be evident that thesliders are introduced to the chute 38 for progression: therethrough, with their lugsl. disposed: within the chute groove 38a, for successive entry into the table slot 62, with the lug" of the entered slider in the groove 63 0f thetabl'e slot and the lower or bottom edges of the wings w bearing upon the opposed surface of the; base 36, to

traverse the same in the transfer of theslider to the die position, as thetable 31 is urged to the left, as viewed in Figure 1-, in response to the oscillation of thelever 45 in alike directibn'-,.the relative spacing of the slot-forming faces of the table slides 31a, 31b, providing for the free entry" of the slider 8 within the slot 62, irrespective of possible relative divergence of the lateral sur faces of the slider. In the movement: of the table assembly to locate the slot 62 in work' re-- ceiving position, the effort is transmitted from the arm 45, rocking to the right, and" through the block 49" to the slide 52 to effect the" conjoint movement of the table-forming slides for dis-L posing the slot 62' in alinement with the work'- delivery chute 38 for the reception of a slider therefrom. As the slider is entered in the slot 62, the continuing movement of the slide 52 'to the right permits the spring 51 to function to urge the slide 31a toward the slide 31b to.cooperate therewith to compress the divergent lateral surfaces of the slider disposed within the areaof the slot 62 into parallel relationship. In the ensuing movement of the table assembly to theleft, to locate the work at the die position, it will be manifest that this movement occurs in response to the actuation of the lever 45 to the left, the block 49 moving with said lever engaging the stop 69a on the aforesaid arm 90, the stop being disposed in the path of movement of said block by. the action of the spring 6|. As the stop 60a is thus engaged by the block 49, the continuing. arcuate movement of the lever 45' will effectthe positive actuation ofthe table 31 from thework-receiving, position to the die position. At that point in the cycle, in which the movement ,of the table tothe left locates the work at the die position, the arm 60 abuts upon the stop Gla -to be deflected upward in opposition to the spring 6|, this movement of the arm 60 effecting the disengagement of the stop 60a from the block 49, permitting the block to traverse the rod 50 in opposition to the spring 54, the expansion of the spring coincidental to the movement of the workto the die position, effecting the separation of the work-engaging surfaces of the slot 62' formed by the opposed ends of the slides 31a, 31b, to permit the slider to be moved from between the table slides at the die position, as will become evident. Obviously, during the continuingmovement of the block 49 in opposition to the spring 54 to compress the latter, and its opposite movement along the rod 50 to engage the abutment 56 and initiate the movementof the table toward the work-receiving position, the lever 45. is non-effective relative to the table assembly and provides for the dwell of the table at the die position, for the performance of the necking operation and withdrawal of the necked faces being complemental to the portions of the work engaged thereby, the said tongue 68 being in axial alinement with the punch or male die sliderfrom the die position. As the block 49 traverses the rod -under the influence of theof movement of the block 49 to the left for the 1 reverse directional movement of the table assembly, as heretofore described.

To limit the movement of the table assembly to the left or to the die position, and insure com-- plete registration of the slot 62 with the die elements at the die position, a bracket 64, connected to and spanning the outer slide rods 31c, 37d (Fig. 2), is bored to receive the end of the stud 65 threaded into the adjacent end of the slide 31b of the table assembly, as at65a, the slide 31b being adjustable relative to the outer slides for positive reciprocation therewith, relative to the base 35, through the medium of the nuts 66 engaged with said stud 65.

Mounted beneath the, table 31, at the die station or position, is a shoefila formed for the reception of the die section 61 which embodies an upright tongue 68 for centering the work in enga ement with, the... diesection surfaces on- 39 carried by the central slide 34, the movements of the table 3! to and from the die position being synchronized with the alternate descending and rising movements of said slide, as heretofore pointed out.

The central slide 34, as clearly shown in Figures 11, 12 and 13, embodies a head 69, having the usual bearings 69a. for traversing the outer guides 35, the head 69 having a fitting 10 set therein and fixed thereto by the screws .II. The aforesaid fitting 1.0 is provided with relatively laterally spaced dependent arms 12, in juxtaposition to said outer guides 35, each of these arms embodying a cam surface 13, an inner head 14 being suspended beneath said fitting between said arms 72 for relative vertical movement, by screws 15, threaded therein, as at 15a, the screws being axially movable within the bore sections 10a and 10b of said fitting, to provide for such vertical movement of the inner head. Expansion springs 16, positioned upon seats 16a in said fitting l9, abut upon the opposed surface of the inner head and normally function to maintain it in vertically spaced relation to said fitting 10, as shown in Figure 13, these springs serving to cushion the movement of the inner head toward the fitting 19, in the descending movement of are a pair of T-shaped blocks 18, having project-.

ing surfaces which cooperate in functioning as a female die, in the performance of the slider necking operation, as will be hereinafter described. These blocks 18 are preferably of the configuration shown, embodying parallel top and bottom surfaces, indicated at 1.8, with their opposed inner faces inclined, as at 18b, in parallelism with the opposed surfaces 39a of the tapered male die or punch 39, the outer faces of said blocks being composed of vertical sections complemental to the vertical surfaces 72a of the arms [2 dependent from the fitting 1D, surmounted by inclined portions 18d of the same angularity as the inclined portions of the cam surfaces 13 of said arms. The base of each of said blocks '18, is longitudinally slotted on its median line to receive a die-forming element 78a, which may be pinned or otherwise anchored therein, the straight lower edge of said element being disposed beneath the adjacent surface of the block, as shown, and forming an acute angle with the inclined inner edge of said element, in registration with the block surface 18b, to provide a surface 18g projecting beyond the contiguous surfaces of the block, which is adapted to enter beneath the neck portion of a slider, the opposed elements cooperating in supporting the engaged slider for the deformation of the neck under the impact of the punch 39, as will become evident. Normally, as shown in Figure 11, for example, the two blocks 18 are urged outwardly from their coacting positions to dispose their vertical outer surfaces 180 in engagement with the surfaces [211 of the arms I2, by springs 11 interposed between the blocks, in front of and behind the punch or male die 39.

Rockable in bearings disposed transversely of the path of movement of the blocks 18 within the'inner head 14,*above said blocks and'in proximity tothe ton-of said inner head. are 'a pair either. side thereof, these work-engaging sur-,

of pins T9 embodying? intermediate. semi-annular portions 1 9a, the flat. surfaces thereof being.

adapted to engage the notches or seats 'ISe'pro vided in the top surfaces of theadjacent dieblocks 18. These pins l9v extend beyond the rear of the inner head 14? to receive the levers 80; rotatable therewith, the lower ends of the levers 80- beingconformed,. as at 80a, to engage. the

complemental surfaces of the stops 8 I; The stops 8|" are carried by brackets 82 fixedly supported from'tthe bed of the machine tothe rear of the central slide assembly and in laterallyspaced relation thereto,. the stops being adjustable relative.v to the brackets by. meansof the cooperating screws 83, 84', and lockable in' adjusted position:

by the set screws 85. (See Fig. 11.) The .top surfaces of the levers 80, as will be noted, are chamfered or bevelled to form' a nose, as at 8th,. a spring 800 being interposed between the nose of each lever and a suitable seat provided in the I opposed surface of the fitting 10, the springs 800- being: adapted to react at a predetermined stage of the descent of. the central slide to rotate or rock the levers 8D and rotate said pins 19 to engage the. aforementioned flat surfaces of the semi-annular portions 19a of: said pins with the notches or seats We of said die blocks 18.

Dependently supported from the front of the head 69 of the central slide 34, in laterally spaced relation, are a pair of arms. 86 having opposite cam surfaces 86a and 8617, these arms being adapted to. enter the well 81 in the base 36, to actuate the block 88 slidable therein, the descending movement of the arms impelling the block toward the diestation, as the block is energized by the cam surface 86a, while in the upwardmovement of the arms, the cam surface 86b is effectiveupon the block 88 to initiate its movement in the reverse direction, the movement of the block in the latter direction being. completed in response to the'expansion of the spring 88a interposed between the forward end of the block 88 and the mated die sections 61 in the shoe 61a. The sides of the table 31 are recessed, as at 31a, to provide for the vertical movement of the arms 86 to and from their block-engaging position, these recesses being alined with said arms'when the work-receiving slot of the table is at the die position.

Aswill be noted, especially from Figure 5, the block 88 is longitudinally slotted, as at 881), to receive the work-engaging bar 89 to which it is connected by the pin 89a, the movement of the block 88 in the descending movement of the arms 86- urging the bar 89 toward the work to engage the nose of said bartherewith, the nose being undercut, asat 89b, to clear the juxtaposed lug of the slider." Thus, the slider is positively supported upon the die sections 61 against forward and backward, as well as lateral displacement or distortion, under the necking tool impact, the aforesaid elements 78a of the die blocks 18 functioning to support the web portion of the slider the distortion of inadequately supported work,-in punching operations, especially where light gauge material is being processed, as in-the-pro-.

duction of fastener sliders. v

In the operation of the mechanism, assuming that the central slide 34 is raised and the slot GZI'ofT the. table is in registration with the endofthe work-delivery chute 38 to-re'ceive'a slider s, it. will be evident: that as the slide. descends,

movement of the table 31 toward. the die position. will. be initiated in response to the actuation of: the lever 45,,in the clockwise rotation of the drive shaft 4|, in the manner heretofore described.

As the central slide continues its descent, the movement of the tableto: locate the work engaged in' the slot 62 thereof at the die position likewise continues, as explained, the operation of the table and. slide 34* being so timed that when the work disposed in said slot 62 reaches the die position, the die blocks 18 carried by the inner. head. 14 suspended from the head 69 of the central slide areinproximity to the table; the: noseof the male die being. in spaced relationto the'opposed surface of the neckof the slider approximately as shown in full lines in Figure 14,. the. initial. relative disposition of the punch 39 and the die blocks-l8 being indicated in dotted-lines in said figure. In. the continuing downwardmovement of the inner head 14, the thrustJofthe compression springs 16 is effective to cause. the dependentprojecting' surfaces 18a.

of. the die blocks I8 to contact with and press upon the upper edges of the slider wings w to displace the slider from the table slot 62, and locate it in association with the-die sections 61 and the tongue 68, the initiation of the compression of: the springs T6, between the head 69 and the inner head UL-causing the cam surfaces 13 of the arms 12' to become effective upon the surfaces 18d of. the blocks late actuate the blocks toward the work, as the base edges of the dieforming elements 18a; carried by the blocks 18, enter the slot 62 in the table, to abut upon the opposed surfaces of the die sections 61, and cooperate in the formation of a, pocket into which the neck of theslider will be thrust in the functioning of the punch 39, when the latter impinges upon the. opposed surface of the slider neck. (See Figure 15.) In this position of the head assembly components, the levers 80 have become disengaged from their stops 8| and are free to respond to their actuating springs 86.

'. 16 are completely compressed, as shown in Figure 12, the straight portions of the cam surfaces of the arms 12' having entered upon the straight end surfaces 18c of the twoblocks 18,

" to urge saidblocks to their ultimate relative p0- sltions, with their female die-forming surfaces 18g disposed beneath the web forming the neck ofthe slider, to cooperate with the male die 39 in the deformation of the-web, and produce a V-shaped indentation, as indicated at 90 in Figure 16-. Aswill be noted from the latter showing, the: block surfaces 18g cooperate with the entering end of the maledie 39, similarly to a female die, in. the. formation of the V-shaped reinforcement.

As the blocks 18 are urged into their ultimate work-engaging; positions, in opposition to their springs 11,, as-J'ust. described, the levers 8U, un der the influence of their springs 80c, rock the pins f9'on which they are. mounted to cause the flat. surfaces of. the semi-annular portions 19a of said pins to engage with the notches or seats I8e of said blocks and restrain said blocks from relative opposite movement under the influence of their said springs 11.

Upon the completion of the necking step, the initiation of the upward movement of the central slider 34fand t e punch 39, effects the withdrawal of-the punch from the work, the surfaces 'I8g of the blocks 18 remaining engaged headand thesupported blocks I8. At thisstage of, the-ascentof the centralslide 34, the lever 45-becomeseifective upon the table 31 to displace-the work-receiving slot 62 from the die po- =sition inthereverse movement of the table, the blocks ;I8 continuing to rise with the inner head Ilia-gripping engagement with the V-neck "slider, unt-ilthelower ends of the levers 80 im- -:,ping,e ,upon the-stops 8|, the resulting rotative vmovement of-isaid levers in opposition to their .,-spr ings ,80c dislocating the flat surfaces of the semi-,annular portions 19a of the pins 19,.from

-1 therseats or notches-18c of the blocks I8, to perthe springs 11- to, expand and oppositely ac- .ttuate, said blocks to release the work from the surfaces 18g thereof. Simultaneously with the t releasesof the work. by the surfaces 18g of said blocks,18, a finger 9I,-projecting horizontally from-the top of the take-off chute 92 carried'by .and movable with the table 31, contacts with the work to deflect it downwardly and inwardly ofcthe-apron 93, for deposit upon the table surface to be fed through thetake-oif chute to the remov'al position, inv the reciprocatory move :rnents of said table.

The upward movement of the slide 3:? continues of course, until. the head assembly elements assume approximately the positions shown in Figure '11, when the work-receiving slot 62 oftheltable 3.1:is again located in registration with thework-delivery chute 38,- for a repeti- ,tion ,ofthe operation just described.

vInFigures 19,and 20, I have shown a modified {form of work-delivery chute, in which the pro- Ig'ression of the sliders-to discharging position is mechanically controlled, in lieu of permitting --.them'to.-gravitate--to such position, as in the formof chute shown in the preceding figures,

themechanismaforcontrolling-the slider movein'eh't'hperatingfintimed relation with the moveentsgof theslide '34 and the table 31, the chute orresponding tonthat of the preceding figures. f 'f .1 .'A f frame ,member I rigidly supported from ,jtheL'aforesaid base or gib 36'and straddling the fjltable 311, in advance of'the lower terminal of the chute 38, is provided with bearings for the slides IN and I02, which are vertically actuatable therein, in-respo'nseto the rocking. of the lever 1103,;tulcrumedjon saidj frame member at I04, jthe endsgof the lever being, bifurcated for. conneeei the pi 1 nec'tion to the pins I05, I08, on,.the respective slides by the nuts".IIJ'I, A tensionspring I08 [06;of the,slide1 I02 toaiixed V. 9 3m e-gimm m mb r 00, s h wn in Figure 19. An adjustable actuator, or plunger I I0 carried by the head 89 or other suitable part of the central slide assembly of the machine, is alined with the end of the slide IOI.

Each of the slides IOI and I02 carries a lever for engaging the sliders entered in the chute 38 to control their progression therethrough and their successive delivery to the slot 62 of the table 31, the lever III being pivotally mounted on the inner face of the slide IOI, as at IIIa, while the lever H2 is similarlymounted on the opposite surface of the slide I02, as at 2a. Fixedto the surfaces of they respective slides IOI, I02, at a right angle to those from which the levers III,

Il2 are supported, as .by the nuts H3, H4, are

angle bolts I I5 and I I6, the offset end of the bolt II5 being connected to the end of the lever III by a spring Ill, while the offset end of the bolt' H6 is connected by a similar spring II8 to the lever 'II2, the ends of the levers to which the respective springs are attached being above the pivotal mountings of the levers, with the angle bolts located approximately in the plane of the ends of the levers to which the respective springs II! and H8 are connected. As willbenoted, the

said springs I I1 and 'I I8 normally function to. urgethe free ends of the levers [I I I and H2 into contact with the sliders within the chute38, the levers projecting through the slot 38a-thereof, to

control the progression of the sliderstoward the lowermost position toexit from the chute into the slot 62 of the table 31, by which the slider is conveyed to the die position, as heretofore described. As will be evident, the levers are oscillated on their pivots in'the alternate reciprocatory movements of the slides IOI and 1 02,.the downward movement of the-slide H, as plunger-actuated, producing an upward movement of'theopposite slide I02, in response to the rocking of the lever I03,,,the sub'sequent downward movement of the l latter slide, under the influence of the spring I08, actuating the slide I0 I in the direction of the plunger IIO.

Mountedin the frame member I00, is a block I22 to form a bearing for the slide plate I23 having a nose I24 formed to enter the slot 38a of the chute 38, the outer end of the slide having'a head I25, carrying a bolt I26 slidable ,within the bracket I2'I rigid with the bearing block I22, a spring I28 being mounted on said bolt, between said bracket and the head of said slide, it being obvious that the slide is adapted to yield asthe lugs of the sliders abut upon the nose I24 thereof which is disposed in the path of movement of the lugs in the downward progression of the sliders through the chute, as hereinafter'explained. However, by appropriately, adjusting the tension of the spring I28, provision may be made for the slide I23 to function as a detector of oversizeor deformedsliders which maybe inadvertently introducedto the chuter38, itbeing evident that the spring I28 may be adjusted also for the operation of the slide plate I23in con- "junction with a series of sliders of any uniform size which the chute 38 may accommodate,

In the operation of the structure of Figures 19 and 20, assuming that the slot 62 of the tabl'eS'l is at the die position and the ram is descending, as the ram reachesits lowermost position,,the plunger IIIJ engages the opposed end of the slide III! to thrust it downwardly, theslide I02 moving in the opposite direction. Likewise, the'lever I'II moves downwardly, while the lever II2 ,moves upwardly with the slide I02, it being noted that at thispoint intheo'peration of the mechanism,

' the slideilb of t are assembly .is,positioned ,ibeneathjthedelivery end of the chute '38. 'In the progressionof the, ram upwardly,the plunger gl'l l isdisengagedirom the end of the slide till, the

laction of,.the spring I08 ,on the bifurcated lever I03, tending to move the slide l! upwardly. However, at this point a slider has been thrust ,pastthebevelledend of'the slide I24, :as aresult of the downward actuation of the lever H I, and

under the bevelled end of 'theLIeVerHZ. Now, as theaction of the springllla'becomes effective, the resulting .downward movement of the slide H32 causes thenoseof the lever H2, in engagement ,withthe lug ,Qf'the slider,'to urge the slider downwardly and firmly upon the Opposed surface of "thetable slide (3717. The continuing cycleof the machine operation again locates the slot'62 of the Itable ,31 in registration with the deliveryend of the chute 38 and since there is no.0bstruction to the downward movement of the slider now in lowermost ,position, it ,is urged into the slot '62 between ithe table slides 31a, 31b, the lever H2 "functioning to force the slider into said slot. iThisdownward movement of the clever H2, in

effecting ,the transfer of the slider to the slot 62,

isarrested as 'thelever engages with-the .flat surface of the longitudinal cut-out 12! .on the table '31,'th e,slider s being thus freed ofthe lever H2, ,to tbe gripped between the opposed slot-forming surfaces of thejtable slides 3"I ,,3.lb, as previously described. As will be evident, .as thelever ,1 I2

snap .downwardlmthe'tleve JI i' y ds and moves pwardly o er the lu of the next succeedin slider and a sumes aposition relativethereto, to

forcibly impeldt past the'bevelled end of the slide 1124 in 'thesucceeding,downwardactuation of the slide I'Ol, "for engagementtby thenose of the lever 112, in the manner heretofore explained.

Efrem the Io eeoinait will be manifest that I ,have provided a h ghly eficient and Pr c r I mechanism for necking if'astener sliders in which the usual waste resulting from such operations, as now performed, is eliminated, the coacting ele- .ments of the mechanism 'functioningintimed re- ,lationtoadm'it of the highsneed production that jis essential ;to the economical production of faste erfiliders-I a i whil ,1 have described .my vinvention more ,or less specifically with reference to the structure lhe ein shown, it wil be understood that various changes in the details thereof maybe effected and tha the methods.ofassem lylof the omponents to function as described, in attaining the o e tiv s Ofmy invention may be made, within the spiritand sQODe {of my invention, ,as defined i y'the following claims. .1 claim; i

.1. In combination witha machine for necking sliders for separable fasteners, a mechanism for feeding the sliders to the work-receiving table of said machine, comprising a chute having a slot for theientr-y-of .aseries of sliders therein, with their lugs located within Sflid.slot,a rigid vertical support'inlspaced relation to the'slotted-portion of i said chute embodying sets .of hearings on either side of the median line .of said support, a slide re iprocable in each set of bearin s, means conr 1ec tin g ,said slides ,for effecting their-conjoint reciprocation in opposite directions, a ilever rock .ablysupported from .eachorsaid slides; s i l s libeln disposed :inialinement .with saidchuteslot, in

verti spa ed relation to on anothe and spring means connecting the .ends ,of said levers remote from said chute to the respective lever supporting slides, acting to urge the free ends of said levers into engagement with predetermined slidersiin said chutein thereciprocation'of' said slides in alternate directions to control the advancement of the sliders tothe lowermost position in said chute and the delivery of a slider from the lowermost position to said table. I I

2. In combination with a machine for necking sliders for separable fasteners, a mechanism for 'feeding the sliders to the work receiving tab-leof said machine, comprising a chute having a slot for the entry of a series'of sliders therein, with their lugs located within'said slot, arigid vertical sup- .port in spaced relation to the slotted portion: of

said chute embodying sets of bearings on either side of the median line f said support, a slide vreciprocablein each set of bearings, means connecting said slides for effecting their conjoint reciprocation in opposite directions, a lever rockably supported from each of said slides, said levers being disposed in alinement with said chute'slot," in vertically spaced relation to one another, and

springmeans connecting the ends of said levers remote from said chute to the respective leversupporting slides, acting ,tourge the free ends of said levers into engagement with predetermined sliders in said .chute in the reciprocation of said slides in alternate.directions to control the ad- V slider through said chute.

vancementof the sliders to the lowermostposition in said chute and-the delivery of a slider fromthe lowermost position to said ,table; aplate slidably.

mounted for movement in a horizontal plane betweensaid leve rs,;having a portion adapted to-engage the sliders traversing said chute and spring means connected to said plate adjustable tovary the degree of yieldability of saidplate, for controlling the movement of the sliders engaging therewith.

.3. In combination with a machine'forne'cking sliders for-separable fasteners, a mechanism for feeding the sliders to the work-receiving table of .said machine, comprising a chute having a slot for the entry of a series of sliderstherein,with

their lugs located within said slot, arigid vertical support in spaced relationytothe slotted portion of said chute embodying sets ofbearings on-eit'her side of the median line of said support, a slide reciprocable in each set of 'bearings m'eans connecting said slides for effecting their conjoint reciprocation in opposed directions,.a'lever rockably supported from each of said slides, said levers being disposed in alinement with said chute slot,

in vertically spaced relation to one anothenand spring means connecting the ends of said levers remote from said chute to the respective lever- '-supporting' slides, acting to urge the free ends of said levers into engagement with predetermined sliders in said chute in the reciprocation of said slides in alternate directions to control the advancement of the sliders to the'lowermost position "in said chute and the delivery of aslider from the lowermostposition to said table; andspringactuated means engageable -,with the sliders in said chute in a zone intermediate the two levers, for

,means for supporting asliderand defining .a final die position, means for delivering .a slider above the final die position, a vertically reciprocable head assembly carrying a male die mounted above agseaaee and aligned with said slider-supporting means defining the final die position, means suspended from said head assembly for relative vertical movement,

' means for actuating said head assembly. elements slidably mounted in said means suspended from the head assembly in laterally spaced relation to the male die dependent therebetween, said elements being engageable with a slider delivered above the final die position in the descending movement of said head assembly to locate the slider in engagement with said supporting means at thefinal die position, in advance of the engagement of the slider by said male die, means moving with said head assembly having cam sur faces formed to engage said elements in the downward movement of said head assembly relative to said means suspended from said head assembly when said elements are engaged with the slider in the final die position to urge said elements into coacting engagement with opposite neck surfaces of the supported slider to coact with the male die in the formation of the reinforcement, the surfaces of said elements engaged with the slider being conformed to cooperate with the opposed workentering surfaces of said male die to define the shape of the reinforcement, and locking means supported from said means suspended from said head assembly adapted t engage said elements I when urged intoengagement with the slider to maintain said elements in slider-gripping position to'lift the slider from said die position, in the "upward movement of said means suspended from the head assembly in vertically spaced relation to the ascending head assembly, said locking means being-actuatable in a further stage of theascendr ing movement of said means suspended from the head assembly to release said elements for movement from their slider-gripping position for the discharge of the Work therefrom.

' 5. In a machine for deforming the neck of a J slider for slide fasteners, to produce a reinforcing surface therein between the slider wings, a table mounted for opposite directional movement in a horizontal plane, said table being provided with an adjustable slider-receiving slot intermediate its ends, means for feeding a slider to said slot,

a vertically reciprocable head assembly carrying a slider deforming male die supported above said table, means below said table for engaging and supporting'a slider for the performance of the deforming operation by the male die in its terminal downward movement and defining the final diev position, mechanism for actuating said head assembly and said table in timed relation to alternately locate said slot in registration with said slider-feeding"means" and with said finaldieposimeans when said head assembly is in raised position, the table being'moved'in the direction of the final die position ln'the descent of said head assembly to aline said slider-receiving slot with said slider-supporting means in the final die position for transfer of the slider thereto from the expanded slot, and elements associated with said head assembly movable in the descent of said head assembly to a position to engage the slider in the expanded slot and-transfer it into thefinal die p osition, in advance of Ethe downward progression 7 of; the male die-to slider-engaging position, 'said die position, through said expanded slot, following the formation of the reinforcement, in response to the upward movement of said head assembly, said elements being actuatable at a predetermined point in such upward movement to release the slider, the movement of said table to relocate the slider-receiving slot in registration with the sliderfeeding means being initiated as the slider moving upwardly with said elements clears said slider-receiving slot.

6. In a machine for deforming the neck of a slider for slide fasteners to produce a V-shaped reinforcement between the wingsthereof, a longitudinally reciprocable slider conveyor, means for feeding a slider to the conveyor, a vertically reciprocable head assembly mounted above the conveyor and carrying a depending male die, means constituting a cooperating die for supporting a slider for engagement by said male die said cooperating die being disposed below theconveyor in alignment with the male die and defining a final die position, means for actu- 1 ating said head assembly for vertical movement towards and from the fina1 die position and said conveyor for longitudinal movement between said slider feeding means and the final die position in timed relation, elements suspended from said head assembly for vertical movement in the same direction and for longitudinal movement in opposing directions, said elements being engageable with surf-aces of the slider in the initial descending movement of said head assembly to displace the slider from the conveyor into the final die position, in advance of the engagement of the slider by the male die and means for oppositely actuating said elements into engagement with the neck of the supported slider as the male die impinges upon the slider in the terminal descending movement of the head assembly, said elements functioning to support said neck surface in opposition to the descending male die and cooperating therewith in the forma- "tion of the neck reinforcement.

"7. In a machine for deforming the neck of a slider for slide fasteners to produce a V-shaped reinforcement between the wings thereof, a longitudinally rec procable slider conveyor, means for feeding a slider to the conveyor, a vertically reciprocable head assembly mounted above the conveyor and carrying a depending male die, means constituting a cooperating die for supporting a slider for engagement by said male 'die, said cooperating die being disposed below the conveyor in alignment with the male die and defining a final die position, means for actuating said head assembly for movement towards and from the final die position and said conveyor for movement between said slider feeding means and the final die position in timed relation, the con veyor-actuating means. periodically becoming 'non-efie'ctive relation'to said conveyor to permit said conveyor to dwell upon delivery of slider above the fina1 die position as the head assembly descends towards the final die position, elements suspended from said head assembly .for vertical movement in'the same direction and for longitudinal movement in opposing directions, said elements being engageable with :surfaces of the slider in the initial descending movement of said head assembly to displace the slider from the I conveyor into the final die position, in advance of the engagement of the slider by the male die and means for oppositely actuating said elements into engagement with the neck of the supported slider as the male die impinges upon ,slider for'engagement by said male die thereof,

said cooperating die being disposed below the :conveyor in alignment with the male .die and defining a finaldie position, means for actuati-ing said head assembly for movement towards and from the final die position, and said conveyor for movement between said slider feeding means and said final die position in timed rela- :tion, the conveyor-actuating means periodically becoming non-effective relative to said conveyor to permit said conveyor to dwell upon delivery lof -the slider above the final die position as the :head assembly descends towards the final die position, elements suspended from said head as- I semloly for relative vertical movement in the same direction and for longitudinarmovementin opposing directions, said elements being engage- ;able with 'wing'surfaces of a slider in the initial descending-movement of said head assembly to displace the slider from said conveyor into said final die position,-in-advance of the engagement of the slider by the male die, and means for oppositely later actuating said elements into anigagement with the neck of the supported slider as the male die impinges thereon, said elements functioning to support the neck surface in opposition to the descending :male die and cooperating therewith in defining the neck reinforcement, means for locking said elements in engagement with the slider, said locking means maintaining said elements in gripping engagement with the slider to lift the deformed slider from said final die position in response to the upward movement of said head assembly, means for actuating said locking devices at a predetermined point in the upward movement of said head assembly to render them non-effective and means effective onsaid elements to actuate them :to release the lifted slider for transfer from said machine.

9. In a machine for deforming theneck of a slider for slide fasteners to produce a 'V-shaped reinforcement between the wings thereof, a verti- =cally reciprocable head assembly carrying a depending male die, means constituting a cooperating die in alignment with said male die for supporting a delivered slider for engagement by said male die, said cooperating die being disposed in alignment with said male die and defining a final die position, means for delivering a slider above and in alignment with the final die position, means .for actuating said head assembly for descending movement, elements .suspended from said head assembly in laterally spaced relation to the depending male die for relative vertical movement in the same direction and for longitudinal movement in opposing di rections, said elements in the initial descending movement of said head assembly being engageable withsu-rfaces of the slider delivered above the final die position .to enter the slider in the final die position in advance of the engagement of the slider by said male die, and means moving with said head assembly having surfaces for engaging said elements to oppositely actuate them into juxtaposition beneath the neck of the slider entered in the die position, in the ensuing downward progression of the head assembly to bring the male die carried thereby into contact with the slider, whereby said elements support opposite neck surfaces of the slider for the entry of the male die therebetween in the formation of the reinforcement, said elements being conformed to cooperate with said male die in defining the shape of the reinforcement.

10. In aemachine for deforming the neck of a slider for slide fasteners to produce a reinforcement between the wings thereof, a vertically reciprocable head assembly carrying a depending male die, means constituting a cooperating die in alignment with said male die for supporting a delivered slider for engagement by said male die, said cooperating die being disposed in alignment with said male die and defining the final die position, means for delivering a slider above and in alignment with the final die position, means for actuating said head assembly, elements suspended from the head assembly, in laterally spaced relation to the male die, for relative vertical movement in the same direction and for longitudinal movement in opposing directions, said elements being actuable into engagement with a slider delivered above the final die position in the decending movement of said head assembly to locate the slider in the final die position in advance of the engagement of the slider by said male die,

, means moving with said head assembly having cam surfaces formed to engage said elements in the downward movement of said head assembly relative to said elements when the slider is located in the die position to urge said elements into juXta-position in engagement with the opposite neck surface of the supported slider to coact with the male die in the formation of the reinforcement, the surfaces of said elements engaged with the slider being conformed to cooperate with the opposed work-entering surfaces of said male die to refine the shape of the reinforcement.

11. In a machine for deforming the neck of a slider for slide fasteners to produce a reinforcement between the wings thereof, a vertically reciprocable head assembly carrying a depending -male-die, means constituting a cooperating die a in alignment with said male die for supporting a delivered slider for engagement by said male die said cooperating die being disposed in alignv movement in opposing directions, said elements being actu'ableto engage a slider delivered above the final die position in the initial downward movement of the headassembly towards the final of the reinforcementlt amazes :die position ta enterrthe sliderinto said final "dieipositionfiin advance 'oiithe progression of the male die'zto sIideFen'gaging 1 position, additional 'actuatable' irr responsef'to'the descending moveto engage said elements'to oppositely and longi- -tudinally" displace them into' engagement with opposite neck portions: of the slider, the sliderengagingt surfaces f" said. elements being conformed to cooperate with the opposed work-entering surfaces of said'male die to define the shape 12. In a machine for deforming the neck of a slider for slide fasteners, to produce a reinforcing'surface therein between the slider wings, a

table mounted for longitudinalreciprocation, said table being provided 'with a slider-receiving slot intermediateitsI ends, means for feeding a-slider to saidslot, 'a vertically reciprocable head as- "sembly carrying a male die supported above said ta'ble;lm'eans below the table constituting a 00- operating die for supporting a delivered slider for-engagement by said male die, said cooperating means of 'said mechanism including lost motion connections to permit the table to dwell when the slider-receiving' slot thereof is at the sliderfeeding and final diejpositions, said slider-receiv- -i'n'gslot being in registration with said sliderfeding means-when said head assembly is in raised position, the table moving in the direction 4.71.v the final die position duringthe initial de "scending-movement ofsaid head assembly to aline said slider-receiving slot with said slider-supporting means atthe final die position for transfer of the slider thereto from said slot, and elements associated with said'head assembly mounted for 1 relative vertical movement in the same direction and longitudinal movement in opposing direc- 'tlons'; said elements being movable in the continued descending movement of said head assemblyto engage and displace the slider fromsaid table slot into said final die position, in advance ofthe downwardprogression'of the male die to slider-engaging position, said elements embodying surfaces formed'for engaging neck portions of the supported slider, and means moving with said head assembly for further actuating said elements to engage their aforesaid surfaces beneathsuch neck portions of the slider, as the male die inits'terminal descending movement impinges upon thesliden'whereby said surfaces will coact with said maledie in the deformation of: the slider neck in response to the male die pressure. k

-'-'-13."iA[machinefordeformingthe neck of a slider -for slider "fastenerato produce a reinforci'nfg surface'therein between the slider wings, including-a tablemounted for longitudinal reciprocatiomsaidtablebeingprovided with an adjilstable slider-receiving slot intermediate its ends, m an for feeding a slider to said slot, a vertically'freciprocable head assembly carrying a male die supported above said table, means below the table constituting a cooperating die for supporting"a-deliverd"slider for engagement by said male die, said cooperating die being disposed in meansiiiorllaterally supporting the slider in the finalidiepositionz includingva slidable member alignment with the male-die anddeflning a final die position, mechanism for. actuating said head assembly and said table in tlmedrelation to alternately locate said slot in registration with said slider feeding means and with said final die position, the table-actuating mechanism includin means for adjusting said slot to the thickness of a slider entered thereinand means to permit the table to dwell when the said 'slot is at the slider delivery and final die positions and toexpand said slot at eachof said positions, said slider-receiving slot beingjin registration with said slider-delivery means when said head assembly is in raised'position, the table being moved in the direction of the final die position: during the initial descending'movement of said head assembly to aline said slider-receiving slot 'with said slider-maintained means .in ,-.the final die position for transfer-of the slider thereto-from the expanded slot, and elements associated with said head assembly mounted for relative-vertical movement in the'same direction and lon itudinal movement in opposingdirection, said-element being movable in the continueddescendingmovement of said head assembly to'-engage-th e slider in the expanded-slot and'transfer the same into the final die position, in advance of the'downward progression of the malefdieto slider-engagin position, said elements a-embodying surfaces formed for engaging neck portions of the supported slider, and means-moving with said head assembly for actuating said elements to engage their aforesaid surfacespwith such'neck portions of the slider, as the' male die in: its terminal descending movement impinges upon the slider, said element surfaces coacting with said-male-die the deformation of theislider neck; in responseto the die pressure. g v i 14. In a machine for deforming the neck of a slider for slide fasteners tOZ'PIOdUCG'H. reinforcement between the wings thereof, a longitudinally reciprocable slider-conveying; table, means for feeding a slider to the table; awvertically reciprocable head assembly carrying amale die -mounted above said table, meansbelow the table constituting a cooperating die for supporting a conveyed slider for engagement -by;said male die in the terminal descending movement of the latter, said cooperating die beingdisposed in alignment with the male? die: and defining a final die position, meansforactuating the saidheadassembly for descendingmovement towards the final die position and said table for longitudinal movement between said slider-feeding means and said fin'al'die position in timed irelation, the tableposition in a vertical movement to engage the slider and effect its transferfrom said table to the final die position, said latter means in a longitudinal movement" being juxtaposedbeneath the neck of the slider to cooperate with said male die for defining the shape of th surface produced under the neck-deforming pressure of the maledie. H 7 7 i 15. A machine for deforming the neck of a slider for slide fasteners to produce areinforcement between the wingsthereof, including a longitudinallyreciprokial slider table, meansfor feeding a slider to the table, a vertically reciprocable head assembly carrying a male die mounted above said table, means below'the table constituting acooperating die for supporting a deliveredslider for engagement'by said: male die in the terminal descending movement of the latter, said cooperating die being disposed in alignment with the male die and defining a final die position, means for actuating the said head assembly for "descending movement towards the final dieposition and said table for longitudinal movement between said slider-feeding means and said final die position, to locate the'slider in alignment with the final die position in timed relation and means associatedrwith said head as-- sembly operable in response to the continued descending'rnovement of said head assembly,.to move into engagement with the aligned slider and effect its transfer'from'said table to said die position, said latter vmeans, 'in the terminal descending movement of the head assembly being moved into juxtaposition beneath the neck of the for feeding a slider'to the conveyor, a vertically reciprocable' head assembly mounted above the conveyor and carrying a depending mal die, means c'onsti'tutin'g a-cooperating 'die for supporting a delivered slider for engagement by'said opposite directions, means for delivering a slider below said male die, means for moving said head elements in sequence as the head assembly descends. towards said delivered slider, to locate the delivered s ider in alignment for engagement by the male die and to locate said elements in juxtaposed relation beneath the neck of the slider, whereby said elements during the terminal movement of the head assembly support-the neck ofthe lider in opposition to the deforming pressure of the male die for defining th contour of .-the reinforcement. 19. In a machine for deforming the neck of a slider for slid fasteners to produce a reinforcement between the wings thereof a" fixedly disposed die for supporting a slider and defining a final die position, means for aligning a slider with said final die position, a vertically reciprocable head assembly mounted above the final -die position, including a male die cooperating male die, said cooperating die'being disposed in alignment with the male die and defining a final 'die position," means formoving said conveyor to deliver the slider to the'finaldie position, means for moving said head assembly towards the final die position, and devices associated with said head assembly, operable'in response to the movement "thereof towardsthe final die position to engage the neck-of the slider delivered at the final die position. and tocooperate with said male die in defining the shape of the surface produced under the neck-deforming pressure of said male die..

17. In a machinefor deforming the neck of a slider for slide' fasteners to produce a reinforcement between'the wings thereof, a longitudinall reciprocable slider-conveying table, means for feeding a slider to th -table, a vertically reciprocable head assemblyinlcluding a depending male die and elements laterally disposed with respect to the male die; said elements bea ing successively actuable in the same direction with and in opposite directions relative to one anotherand the head assembly and adapted to form a cooperating die with said male die at the terminal descending movement thereof, means for moving said head'assembly and said table in timed relation whereby the slider is conveyed into alignment with said male die during the initial descending movement of the head assembly saidelements, in thefurther descend,-

with said fixed die and elements actuatablein response to th movement of said head assembly for cooperating with the slider, and means for moving said head assembly towards the final die position and to function said elements initially to displace the slider from the slideraligning means into said final'die :position and thereafter to' locate said elements to juxtaposition beneath the neck of the slider as the head assembly descends, said elements, at the termination of their movement, cooperating to support th neck of the slider in opposition to the deforming pressure of the impinging male die in the terminal descending movement of said head assembly, saidmale die and said elements coacting to define the 'contour'of thereinforcement. I

20. In a machine for deforming the neck ofa slider for slide fasteners to produce a reinforcement between th wings thereof, aslider delivery chute defining a slider feeding position, a -fixedly disposed die for supporting-a slider and defining a final die position, slider conveying means said slides to grip .a slider therebetweenfor progression therewith in their conjoint movement,

to a positioniin alignment with said final die position, avertically reciprocable head assembly aligned with said die position and includinga depending male die for cooperating with said fixed die and movable elements for cooperating with the aligned slider during the descent of the head assembly, means for moving said head assembly towards the final die position, said elements being movable in the same direction in response to the initial downward movement of said head assembly to displace the slider from said slider-conveying means into the final" die position, and in opposite directions, in a continuing downward movement of said head assembly, to be juxtaposed beneath the neck of the slider, thereby to cooperate at the termination of their movement in supporting th neck. of theslider in opposition to the impinging pressure of the male die in the terminal downward movement of the head assembly for theformation of the aforesaid reinfoncementw- BIRDSALL P. LAWSON. 

